Selecting the Right Fusible Link

[mattman555]

I've been doing some research on ih8mud and the web around how to replace the fusible links (FL AM1 1.25B, FL AM2 0.3P, FL MAIN 2.0L).

I've read some ih8mud articles around how to replace them with Slo-blo fuses, but I didn't run across any solid information on how to select the correct fusible link as a replacement. (I'm sure I just haven't read the right post).

However I came across these articles today and I thought I would share.

Based on these articles it appears there are two schools of thoughts, and it might depend on the fusible link product you select.

School 1 -- Choose a fusible link four number size difference between the Fusible Link wire gauge size.

Reference -- http://www.madelectrical.com/catalog/fusible-link.shtml

School 2 -- Choose a fusible link two number size difference between the Fusible Link and the gauge size.

Reference -- Package directions for a Cooperman/Bussmann fusible link.


Has anyone else seen other variances with Fusible link selection?

 

[jonheld]

Replacement fusible links from the Toyota dealer are around $15 and are a direct replacement. I'm not sure what you're trying to accomplish here, but I would purchase an OEM set and call it a day.

 

[mattman555]

Replacement fusible links from the Toyota dealer are around $15 and are a direct replacement. I'm not sure what you're trying to accomplish here, but I would purchase an OEM set and call it a day.

Hey Jon... thanks for your comment and your right if you are replacing the stock fusible links then yes go Toyota.

However if readers of this post are adding or updating a device then this information has value.

In reading various posts on ih8mud around upgrading / changing electrical wiring there seamed seemed to be some misunderstandings on how to select fusible links. In fact one school of thought is to replace fusible links with a Slo-blo fuse. This technique seemed to be used as they were unable to select the right fusible link.

The point of this post was to supply information I found around how to select a proper fusible link based on the custom needs a reader might have.

I hope this clears my post up for you and this information is helpful to others. If anyone has other suggestions around this topic please post up.

Thanks...

 

[Maetriques]

Hey Jon... thanks for your comment and your right if you are replacing the stock fusible links then yes go Toyota.

However if readers of this post are adding or updating a device then this information has value.

In reading various posts on ih8mud around upgrading / changing electrical wiring there seamed seemed to be some misunderstandings on how to select fusible links. In fact one school of thought is to replace fusible links with a Slo-blo fuse. This technique seemed to be used as they were unable to select the right fusible link.

The point of this post was to supply information I found around how to select a proper fusible link based on the custom needs a reader might have.

I hope this clears my post up for you and this information is helpful to others. If anyone has other suggestions around this topic please post up.

Thanks...

I know this thread is a few years old but Delphi recommends 4 sizes smaller wire for fuzible link and that a FL should never excede 9" (shorter being better). I read the white paper on it... Pretty cool stuff with regards to voltage loss and heat in wire.

 

[Maetriques]

Also this link is informative:

http://www.w8ji.com/battery_wiring.htm

 

[mattman555]

Thanks for posting up!

 

[sunrk]

If you get the right rating of fusible link wire can you make them yourself? They are not expensive to get new from Toyota though (going on amayama pricing).

 

[Blade 80LC]

If you get the right rating of fusible link wire can you make them yourself? They are not expensive to get new from Toyota though (going on amayama pricing).

Yes you can make them yourself. I think the OP was suggesting how to make them yourself if desired for an extra fuse box or some such. You could also make your own replacements for the factory parts, but for reliability's sake, I'd use the OEM if possible.